Adjustable-tension saw-gage.



T. N. 10RDAN, la. AMUSTABLE TENSION SAW GAGE.

APPLICATION FILED FEB. 24| |917 Patented Mar. 5, 1918.

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Application tiled February 2a, 1917.

' yn nlt the llnite.. kilates l: lllohile. in the calmly olE and i .le ol3 .llalian a, have invented a eerz'iv and iis-etui "uiproreinent in fideftersion tlaw-llagcs. nii which the :i swcitilfation.

' in,'entioi'i relates generally lo and palicularly lo one adapted straight ed; L, in lamina-,tion with handsau .i to detect the e eet of uneipial tension tir-crealollig7 and as au adjustahle rage tor flished circular saws. my lo; lo proud-r` a siruplH strong. and elim-lire device oli this character. adjustineut or which may he readil)v and duieldy iliade.

the pre'lifrred nuans lily which the ahorn olrjerls are carried out. are filmen in the padrino' di'arringn termine' a pari" olf this specilicatioin and ulunfeinq Figure 'l is a side elevation oli nl v iniproved linge.

lli` @is vertical longitudinal section illnstrai-ii g' parts in nnrn'ial position.

ll`ig. is a similar View illustra ting dellection olAI the gage bar.

Fig. l Vis an enlargement ol the central portion o'lI Vig. l. illustrating practical application ol the device to a circulzu' saw1 and Figs. 53 G, and T are vertical cross sections taken respectively on lines :1*5. flu-G7 and l-7 ol llig. il.

lle'lerring nou' to thesel jligures, Iny invention comprises a pair of spaced parallel side bars 10 and 1l. having straight lower edges 12 and beveled upper edges 13. the latter heing inclined 'from a suhsti'inlially central point at which the side plates 10 and 'l1 are connected in spaced apart relation hy liller plates 11l and 15, said side plates l() and 11 having alined openings 1G elongated iu the rlirection o'li their longitudinal axes and located at a substantially Central point. and the inner ends oi the said filler plates being cut away adjacent. said opening 16 and as particularly seen at 1T 'in Figs. 2, and 4l.

lhe side plates 10 and 11 and the Filler plates lll and are riveted or otherwise suitably secured together hy 'fasteningl menihers at 18, so that the side plates are rigidly braced in their spaced relation. the filler plates 111i and 15 being themselves spaced apart in a direction longitudinally ol the side plates l0 and ll in order to 'form a limitent o Serial No. 150K/26.

transverse guide ehannel7 tor a purpose to be hereinafter described.

lletween the straight edges 1:2 ot the side plates 1l) and l1` is disposed a longitudinal rage or dellection har ll), the outer normally straight edge ot which. extends outwardly bevond.y and normally parallel with, the snaight edges lf2 oli the. side plates l() and Il.` and the said bar 19 being provided with openings adjaeent its extremities by which ii is connected to the extremities of the side plates ll.) and ll tln'migh the use of suitable 'Fastening inenibers shoun at Q() suoli as rivets extending through the deflection bar.

Thus :he bar lll being tree of connection exrept at its ends'. is cat )ialile ot' deflection to produce a desired :urvatln'e at its outer edge for engine the curvature ot a (lished l-ireular sau'. sueh as indicated at .l in Fig. -l. by means ot an adjusting member il slidabll' movable between the side plates 1l) and Vl1 and generally l'lat :tor this purpose, the upper portion ol.I the said nieinher being disposed in the. guide channel iliorined het u'een the spaced iiller plates lll and 15 and having its upper end provided with graduations at 22 adjacent the upper edge oli the said side plates, the lo'ivcr endg of said adlasting' inexnher 2l extending into engagement with the upper or inner edge of the deflection bar 19 at a point intermediate the secured ends ot the latter.

The adjusting member 2l is also provided with an enlarged threaded portion 23 intermediate its ends extending into the open- 16 ot' the side plates and there engaged by an adjusting nut 24 also extending Within the said openings whereby the member 21 may he adjusted transversely of the gage by rotation of the said nut. the latter having hearing against the edges of the side plates 'lll and 'l1 and the iiller plates 14 and 15 at one side ot the openings 16.

lt will thus he seen that the parts of my improved gage While retaining the desired tlexihility tor adjusting purposes, are otherwise strong, rigid, and durable, and that the gage as a 'Whole is capable of ready and quick adjustment. and effective action, in eonnection with the use to which it is designed.

l. claim zd l. ln adjustable tension saw gage co1nprisine' a pair of spaced side plates having openings elongated in the direction of their longitudinal axes and located substantially centrally thereof, a deiiection bar connected at its extremities to the extremities of said side plates and disposed between the lower portions of said plates, with its outer edge projecting beyond and norinalljT parallel with, the adjacent plate edges, liller plates rigidly connecting the said side plates intermediate the ends oic the latter and spaced from one another longitudinally ot' the side plates to 'form a transverse guide channel, a flat adjusting member slidable between said side plates in the channel between said filler plates and having an enlarged thread ed portion within the said openings, and a nut engaging the said threaded portion oit said adjusting1 member and also disposed in the said openings for bearing against portions of the side plates and filler plates at one side ot the opening.

2. An adjustable tension'saw gage coinprising a pair of spaced side plates having openings elongated in the direction ot' their longitudinal axes and located substantially centrally thereof, a deflection bar connected at its extremities to the extremities of said side plates and disposed between the lower portions of said plates, with its outer edge projecting beyond and normallj7 parallel with, the adjacent plate edges, filler plates rigidlj7 connecting the said side plates intermediate the ends of the latter and spaced from one another longitudinally of the side plates to form a transverse guide channel,

intatta a. l'lat adjusting member slidable between said side plates in the channel between said filler plates amd having an enlarged threaded portion within the said openings, and a nut engaging the said threaded portion of said adjusting member and also disposed in the said openings for bearing againstportions ot the side plates and iiller plates at one side of the opening, said adjusting member be ing also provided at its upper end with graduations adjacent the opposite edges of the said side plates, for the purpose described.

An adjustable tension saw gage comprisinga pair of spaced apart side plates having intermediate openings, a deflection bar disposed between the said side plates along one edge thereof and connected at its opposite ends thereto, an adjusting member slidably movable between the said side plates transversely thereof with its inner end in engagement with the inner edge of the said deflection bar intermediate the ends of the latter, said adjusting member having its opposite end projecting beyond the opposite edges ott the side plates and provided with graduations for the purpose described, and an adjusting member disposed in the openings oit' the side plates and engaging the said adjusting` member for adjusting the latter.

THOMAS N. JORDAN, Jn. llitnesses A. E. Cnnsson, Mrs. A. E. CnnssoN.

Copies of this patent may be obtained for nire cents each, by addressing the Commissioner of Patents. Washington, l). tl. 

